Anthropic has introduced Sonnet 4.6, the latest iteration of its mid-size model, as part of its four‑month update rhythm. The new version improves coding, instruction‑following, and computer‑use capabilities and becomes the default for both Free and Pro plan users. A beta rollout offers a one‑million‑token context window—twice the size of the previous maximum—enabling handling of entire codebases, lengthy contracts, or dozens of research papers in a single request. The launch follows the Opus 4.6 release and is accompanied by strong benchmark results, including a 60.4% score on ARC‑AGI‑2, positioning Sonnet 4.6 above most comparable models. Read more →